Quick Answer
The logarithmic wind profile hub-height wind speed estimator calculator computes hub-height wind speed from the input values you provide.
Calculator
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Find Engineering Solutions →Result Interpretation
Logarithmic Wind Profile Hub-Height Wind Speed Estimator calculator computes Hub-height wind speed in m/s using the defined engineering formula and the input values provided. Hub-height wind speed is expressed in m/s. No universal acceptance threshold is defined by this calculator.
Worked Example
Verified calculation
Given:
- Reference wind speed = 5
- Turbine hub height = 80
- Reference height = 10
- Surface roughness length = 0.03
- Zero-plane displacement height = 0.7
Expected Result:
- Hub-height wind speed = 6.868035141319
Engineering Interpretation:
Under the given input conditions, the calculated result is: Hub-height wind speed = 6.868035141319 m/s.
The actual numerical result is computed by the Runtime engine using the persisted tool definition. The values shown here come from deterministically validated test cases.
Formula / Method
hub-height wind speed = reference wind speed * log((turbine hub height - zero-plane displacement height) / (surface roughness length)) / log((reference height - zero-plane displacement height) / (surface roughness length))Hub-height wind speed.
Variables
| Symbol | Label | Role | Description |
|---|---|---|---|
| wind_speed_ref | Reference wind speed | INPUT | Reference wind speed |
| hub_height | Turbine hub height | INPUT | Turbine hub height |
| ref_height | Reference height | INPUT | Reference height |
| roughness_length | Surface roughness length | INPUT | Surface roughness length |
| displacement_height | Zero-plane displacement height | INPUT | Zero-plane displacement height |
| wind_speed | Hub-height wind speed | OUTPUT | Hub-height wind speed |
Calculation Steps
- Enter the reference wind speed in m/s.
- Enter the turbine hub height in m.
- Enter the reference height in m.
- Enter the surface roughness length in m.
- Enter the zero-plane displacement height in m.
- Step 1: Compute hub-height wind speed.
- Read the hub-height wind speed (m/s) from the results.
Frequently Asked Questions
What does this calculator calculate?
The Logarithmic Wind Profile Hub-Height Wind Speed Estimator calculator estimates Hub-height wind speed based on the input parameters you provide
Why is reference wind speed important in this calculation?
reference wind speed is directly proportional to hub-height wind speed. When you enter reference wind speed in m/s, the calculator uses it in the engineering formula to compute the output
How should I interpret the result hub-height wind speed?
The calculator outputs hub-height wind speed in m/s. To convert to km/h, multiply the result by 3.6. The result is computed directly from the input values using the defined engineering formula
What units should I use for the inputs?
Enter each value in the units shown next to the input field: Reference wind speed (m/s), Turbine hub height (m), Reference height (m), Surface roughness length (m), Zero-plane displacement height (m). Make sure all inputs use the specified units for consistent results
What assumptions does this calculator use?
This calculator uses automatically validated engineering formulas. Results are approximate and should be validated against site-specific conditions, applicable codes, and professional engineering judgment
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